{298} Laptop Charger Repair (DEAD) No Power Solution | How to Repair Switch Mode Power Supply SMPS

in this video i demonstrated #Laptop #Charger #repair - (DEAD) No Power Solution | How to Repair Switch Mode Power Supply SMPS, i explained in urdu hindi language. this laptop Dell laptop charger using UC3842 current mode smps controller ic, it had no power, when power was connected or plugged in, it was not powering ON.
when i checked the voltage on DC rail on bulk dc capacitor, these were 330VDC but there was no output. then i checked voltage on vcc capacitor there were no voltage. vcc voltage are the most important for function of any ic. so that was the reason that pwm controller ic us3842 was not taking start. (uc3842, uc3843, uc3844, us3845, ka3842,ka3843, ka3844, ka3845 ics have the same pinout in their datasheet). pin number 7 is vcc pin, it must have vcc voltage for 3842 ic, it must have 12 working vcc voltage. these vcc voltage were missing due to the reason that the startup resistor was burnt. it was not providing initial vdd or vcc voltage to the ic. i checked that the original resistor was 180K ohm. for test purpose i connected 310K Ohm. (we can use a higher value resistor, it will cause a slower start)
explained practical How to repair switch mode power supply SMPS very easy. i shared my easiest and perfect troubleshooting techniques practical troubleshooting. smps concept and troubleshooting repairing or understanding repair switching mode power supply basics and working principle. also i discussed smps basics. after watching this video you can capable to:-
how to repair smps
fuse keeps blowing
how to repair switch mode power supply when short circuit at input
if SMPS is dead or no output
if SMPS have fluctuating output or output voltage unregulated
if smps have short circuit in output
how to eliminate short circuit
how to troubleshoot PWM SMPS #controller when there is no switching from MOSFET
if SMPS have a whistle sound or excessive noise or excessive heat
how to repair mobile charger
how to repair computer power supply
how to repair laptop charger
how to repair inverter of solar system
how to repair UPS uninterruptible power supply

[@DuascookingChannel]

Keep it up good work informative video 👌

[@MoowwaaiissMowais]

پیارے محترم بھائی جان جی آپ جس طرح عمدہ اور احسن طریقے سے گائیڈ کرتے ہیں اس طرح اور لوگ نہیں کر پاتے ہماری گزارش ہے کہ آپ ایمپائر پر بھی تفصیلی ویڈیو بنائیں اللّٰہ آپکی خیر میں ہماری بھی خیر ہو جی

[@sanobarshah786]

آپ بہت اچھا گائیڈ کرتے ھو اور بہت سی چیزیں جو پہلے کسی نے نہیں بتائیں آپ نے بتائیںgod bless you🎉

[@ajaykumar-sp5sl]

aap bahut acche se samjhate hain. thank you.

[@Mirasadpirkani5355]

MashaAllah Usatd ji bhot Kuch sikne ko mela

[@tahirrehman1436]

TH-cam par sab say top videos aapki hai

[@vijayakarekar]

Thanks sir ji...aapse bahoot sikhneko Mila hai....

[@lnyadav8507]

Very nice way of teaching.I salute you dear.

[@Rajudas11985]

Guruji main West Bengal se hu..
Aap ko mere taraf se pranam
Shikar kijiega..
SMPS Ka Video Dekha Toh Khush hogaya..
Sirji mera ek request hai output voltage kam ya jyada karne ke liye kaun si value ka resistance lagana chahie iske upar ek video banaaiye 🙏🙏🙏

[@shamoolkhanhorrorchannel5712]

Bht achay se samjhaya thanks

[@haqnawaz6189]

Very good teaching experience and I am currently working on the project and thank you for the information

[@usmanawan9378]

Thank you soo much sir Allah ap ko khush rakha

[@rashminaik6039]

Ek behetarin video...

[@AKCOMPUTERS]

SUPER EXPLAIN SIR JI ......

[@lalithprasanna6214]

Trouble shooting and repair tips and explain skill is excellent .dear sir most people like to see your video depend on your good experience .good luck i am from sri lanka

[@rajbirsingh5835]

Bahut hi achha .

[@fatimaKitchen12]

Aslam u elikum bhai mashaAllah great video

[@sajidmunir864]

Excellent, beautifully explained, thank you very much

[@haseebelectronicsurdu]

You are welcome!

[@karunakarshetty51066]

Excellent knowledge sharing

[@firasatali0999]

Very well explained

[@adamsher4950]

Buhut Achi video hai magar buhut Door se banai hai koshish karay nazdeek se banai ,,thank you

[@aijazurrehman2478]

very good information god bless u

[@vlogsbykhadija]

Informative video 🙋💗

[@vcrvhsyoutuber]

Very good information sir ji thanks

[@wirsa]

Masha Allah
So nice beautifuu sharing

[@MalikLillah72]

Wow Beautiful Sharing informative video

[@devanandsawant3549]

Very good information sir

[@misbahlifestyle5155]

Informative video 👍

[@Dr.QaisarAbbas99]

Nice job dear brother 👍 Stay blessed

[@shafiqulislam6451]

Sir so many many thanks very information and useful video.

[@haseebelectronicsurdu]

it is my pleasure

[@asadraza-ci5gt]

Good work thanks

[@sarwatsiddiqui]

thanks it is informative like your other videos i watched and i subscribed your channel

[@haseebelectronicsurdu]

Thanks and welcome
it id my pleasure

[@user-el5dt9iy9d]

thanks bhai jaan

[@gurpaldandiwaldandiwal1845]

Great info.

[@peopletv9079]

Good job nice work.

[@user-fz1gf2up8z]

Mashallah ap bohat ache hy

[@irfan-4]

excellent 👍

[@asheraziz9121]

Great job

[@madangupta1370]

Thank you sir aapke jaisa video TH-cam par nahi milta. Sir aapke dwara dikhaya gaya circuit Digram kaise download kare fursat mile to video banayege Dhanydad.

[@DeshiRanna]

Assalamu Alaikum. Maa Sha Allah, very useful video. Thanks for sharing.

[@chuengueyhwang8558]

Excellent work.love to watch your videos thank you for sharing. Have a great week. A new friend

[@sureshpatil5406]

Special thanks for important knowledge. 🙏🙏

[@haseebelectronicsurdu]

best regards and lovely thanks

[@adnankhattak6]

Assalamualaikum brother.. your videos are very informative.. the way you explain the theory before repair is very excellent way because in this way we get the complete understanding and issues are easily understandable. Keep doing this good job. Please prepare a complete video on the laptop charger with voltages or signals at each step

[@asmafoodvlogs9954]

Waooooo great shiring 👍🌹

[@MudassarHussain-hs6sf]

ماشاءاللہ بھائی اللہ آپ کو لمبی عمر دے آپ کے سمجھانے کا طریقہ بہت عمدہ ہے اس سے ایک عام آدمی بھی کافی علم حاصل کر لیتا ہے اور مجھے بہت کچھ سیکھنے کو ملتا ہے

[@haseebelectronicsurdu]

الحمد للہ ۔ یہ اللہ کا شکر ہے

[@CookingKhabir]

Big like amazing

[@sanasmenu2113]

Very Informative video 👍

[@lifeboy6969]

بہت خوب ماشاءاللہ، نہایت سلیقے سے کام کیا آپ نے۔

[@haseebelectronicsurdu]

Allah aap ko salaamat rakhey aameen

[@sanjaypatil8026]

Nice information

[@saa225]

Sir Salam, I have exactly same type of adopter from an Inkjet Printer, it output should be 12vdc, instead it is 0, perhaps it has similar fault in it. Sir this info doesnt interest anyone, but viewing your videos regular, I get dedicated intelligent work ready made to every one, andebele on top a descriotion of next level that anyone might looking for. My salute Mr. Ashraf, you are awesome person.
syed Arif Akhter, Canada

[@sobisobikitchen]

good information ji

[@DarsKitchen]

Very helpful!👌🏼

[@kitchentoolss]

Really enjoy the vlog. 💞💕💞

[@haseebelectronicsurdu]

thanks a lot
stay blessed

[@srinivaschouke7661]

Thanks. Sir

[@PROJEKSERVISHP]

Always be enthusiastic and healthy brother, good luck 🙏🇮🇩

[@surendrasinghdhanjal5835]

Excellent diagnostic.

[@haseebelectronicsurdu]

Many many thanks

[@sandeepmane2983]

Very nice information video 📹 👌
Amazing experience you have,,, Seriously 🙏

[@haseebelectronicsurdu]

it is my pleasure
i am thankful for your valuable comment

[@sanjeevkumargupta6551]

Very valuable information.

[@haseebelectronicsurdu]

it is my pleasure

[@salimjaved7239]

بہترین۔۔۔جزاک اللّہ ہو خیرّ

[@haseebelectronicsurdu]

اللہ سلامت رکھے آپ کو

[@BricoolinoSenyor]

بارك الله فيك اخي الغالي👍👍👍

[@haseebelectronicsurdu]

thanks a lot dear brother

[@irfanshafiqueelctronics5257]

ماشاءاللہ سر بہت زبردست آپ سمجھاتے گریٹ انفارمیشن آپ کی ہر ویڈیو ماشاءاللہ سب سے بہترین ہوتی ہے ماشاء اللہ

[@haseebelectronicsurdu]

الحمد للہ
اللہ کا شکر ہے

[@sandeepbaghel8407]

very good

[@pankajwasnik8632]

bahot Bahot badiya

[@haseebelectronicsurdu]

it is my pleasure

[@shirleybato7253]

awesome content

[@bashirgulam]

Masha Allah, Allah Aapko jazai khair ata farmaye bohot khoob information dete ho aap bohot sare sawal aapke video dekhne se solve ho jate hai Shukriya is Knowledge ko hum sab ke saath share karne ke liye Love from India jazak allah

[@haseebelectronicsurdu]

Aameen
Jazaak Allah khair
ye merey leiy khushi ki baat he

[@sushilchoudhary5749]

Thanks for informative video.

[@haseebelectronicsurdu]

most welcome

[@sohailabbas2486]

thnk u sir,

[@ahsanhaseeb7202]

Great work sir.

[@haseebelectronicsurdu]

best regards

[@abhishekpruthi2982]

Beautiful information ..

[@haseebelectronicsurdu]

best regards and special thanks

[@Ade_Official-d4e]

Thanks New friend 👍🔔

[@zulfiqarhaider6702]

Thank you sir good knowledge

[@haseebelectronicsurdu]

thanks a lot

[@The.warrior.]

Brilliant work

[@haseebelectronicsurdu]

best regards

[@muhammadwazir3350]

Sir boht malumati video ha ap k channel se hme boht faida hota ha Allah ap ko salamat rakhe ammin.
Sir aik laptop ka charger ha jis ka out put voltage meter per check krai to bilkul ttheek mile hn load lagane se ya laptop conect krne se voltage drop hotain hn out put ma koi component khrab nehi ha kia fault hosakta ha sir.

[@mohammadsarwar3933]

a o a , apky samjahne ka triqa mojy bohat hi acha lgta hai, v nice,apki video dekhny se pehly hi like kar deta hon, allah apki umar draz farmayyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy M. Sarwar

[@haseebelectronicsurdu]

best regards and special thanks

[@hassantahirfoods217]

biiiig like
supper sharing bro very informative
stay connected

[@haseebelectronicsurdu]

Many many thanks

[@askumar-vg1br]

Thanks

[@afzalhusain461]

Haseeb bhaai assalamo alaikum
Aap bahut achha samjhate hai, allah aapko khub tarakki aur sehat de

[@haseebelectronicsurdu]

wa alaikum salaam
thanks a lot

[@FaisalMir_home]

Good work, logical approach, Thanks for sharing.

[@haseebelectronicsurdu]

You're welcome

[@ahmedmadkour]

Nice work my brother 😍 give you nice 👍

[@haseebelectronicsurdu]

thanks a lot dear brother

[@hafizinamurrehman4265]

Thanks I have earned a lot of knowledge from your video and I am able to repair power supplies.

[@haseebelectronicsurdu]

You are welcome

[@hunterhunt226]

Great explation

[@haseebelectronicsurdu]

best regards

[@ARJRaj-en6qm]

Good information sir.

[@haseebelectronicsurdu]

i am thankful Ji

[@a.k.qelectronic6282]

السلام علیکم سر ماشاء اللہ بہت اچھا آپ ماشااللہ سر آپ کی ویڈیو جو ہے بہت اچھا ہے اور بھی ایسا ویڈیو بنائیں تاکہ ہمارے ہمیں سمجھنے میں آسانی ہو

[@haseebelectronicsurdu]

جی ان شاءاللہ میری تو کوشش ہے۔ اپنی دعاوں میں یاد رکھیں

[@Yasmeenrafiqvilog]

Nice shering bro

[@batistafrose6009]

Nice video

[@pravinpadhiyar2]

Very nice video sir 👍👏👌

[@haseebelectronicsurdu]

Thanks and welcome

[@nrusinghnathpanda5125]

Sir app ka video sa bahut sikhta hun

[@haseebelectronicsurdu]

ye to merey liey khushi ki baat he bhai ji

[@arshadgul88]

Thanks Bhai information dene ke lye

[@haseebelectronicsurdu]

best regards and special thanks

[@arshadgul88]

@@haseebelectronicsurdu Bhai ntc 10 ohm heat hokar zero par aa Jane par aage current bhejna rok deti he lekin
PTC 10 ohm se value bada Kar Kahan pahuchti he or kis condition me kaam Karna rok deti he plz bataye bhai

[@voiceofimranasupportid9288]

Suepeb Sahring
Zabrdast amazing

[@haseebelectronicsurdu]

thanks a lot dear sister

[@sikandarlal6003]

Nice work sir

[@haseebelectronicsurdu]

thanks bhai

[@rahulpatelgujratahmedabad3497]

Good tiching karte hai 👌👍👌👌👍👍👌👌👌👍👌

[@haseebelectronicsurdu]

thanks a lot dear

[@cheerchannel2015]

nice sharing

[@pramodpandey121]

Sir thankUuuuuuuii......

[@haseebelectronicsurdu]

thanks a lot

[@naseebjan2256]

super sir

[@haseebelectronicsurdu]

thanks a lot dear brother

[@tariqbutt8724]

MashaAllah Great teaching style Sir .and informative videos in your channel,awesome practical approach .plz continue and stay blessed.

[@haseebelectronicsurdu]

boht shukriya piaarey bhai
Allah aap ko salaamat rakhey aameen

[@tariqbutt8724]

@@haseebelectronicsurdu JazaakAllah ...Allah app ko khush rkhe .....Aameen

[@RavinderKumar-op6ty]

Thank you sir

[@haseebelectronicsurdu]

best regards and special thanks

[@shefqetkaralliu6816]

Ottimo video di informazione. Grazie

[@haseebelectronicsurdu]

best regards

[@voiceofimranasupportid9288]

Great sharing

[@haseebelectronicsurdu]

Thank you so much 🙂

[@shivsharankurmi9041]

So many thanks Haseeb sir for superb description of your fault finding.God bless you sir.

[@haseebelectronicsurdu]

i am thankful and it is my pleasure

[@user-pq5tz5pn4g]

السلام عليكم بالتوفيق اخي الله يوفقك يارب